grant at nowhere.
Thu Mar 23 23:59:00 CET 2000
In article <38DA9F8C.E9133C71 at be-research.ucsd.edu>, Curtis Jensen wrote:
>Python does work on a reference setup, but it's not exactly
>like pointers. For example:
>>>> a = 5
>>>> b = a
>>>> a = 3
>>>> print b
>If b were a pointer to b then print b would return 3, not 5.
No, b isn't a pointer to a. b is a pointer to whatever a was
pointing to when the assignment a = b was made. It's the same
as pointers in C:
const int object5 = 5;
const int object3 = 3;
a = &object5;
b = a;
a = &object3;
b points to object5, and a points to object3. *a == 3 and *b ==
5 just like Python.
>There is the problem of mutable types and immutable types here,
>but the same thing occurs if you use a mutable type. So,
>pointers and python referances are not the same.
I'm afraid I still don't see how they're different.
Grant Edwards grante Yow! I want the presidency
at so bad I can already taste
visi.com the hors d'oeuvres.
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